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ALL-PURPOS
BALANCED
CAGE-GUIDED
CONTROLVALVES
ANSICLASS 150-150
2”TO 16” (50MM TO 400MM
Simple Desig
Simple Operao
Simple Maintenan
D-Series
10/7.5.4
R u g g e d C a g e G u i d i n g * H a r d e n e d T r i m M a t e r i a l s * M u l t i - S t a g e , A n t i - N o i s e & A n t i - C a v i t a t i o n T r i m
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Product Informaon
SIMPLY THE BEST!D-Series from Circor is the next generaon of the reliable and
proven DBOY control valve. The D-Series is an all-purpose
cage-guided, balanced control valve. This new product offers sim-
plicity of design in a valve plaorm that is well suited for the needs
of power, process, and general industry. A wider selecon of valve
sizes, materials, and noise / cavitaon trims allows applicaon
across a broader range of flow rates, pressures and temperatures.
HARDENED STAINLESS STEEL TRIMStandard valve trim consists of heat-treated and hardened 400
series stainless steel providing maximum hardness with excellent
wear properes, in addion, 316 stainless steel is offered for
superior corrosion resistance. Seang surfaces can be addionally
armored with a nickel/cobalt overlay (Stellite®) on the 316 stainless
steel base material providing significantly longer service life than 316
stainless steel trims.
CAGE OPTIONSInterchangeable trim and cages offer maximum versality in flow
control applicaons.
Cage variaons include:
• reduced trim which provides capacies of 80% or40% of full trim capacity. This feature can be used to
control valve body velocies, to plan for future flow
expansion, or to correct for oversized condions.
• Les-Cav cage effecvely prevents any valve trim
damage due to valve cavitaon.
• Les-Sonic cage effecvely reduces noise at the source
in either a single-stage or two-stage construcon.
BALANCED PLUG DESIGNThe balanced plug design of the D-Series equalizes line pressure
under the plug with pressure above the plug, effecvely cancellingany unbalanced stem force due to pressure drop. In addion to
providing smooth, high-pressure control, balanced plugs allow use
of smaller, lighter, cost-effecve actuators. Class III, IV or V shut off
can is provided.
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D-SERIES SPECIFICATIONS
BODY ASSEMBLY: Style: Single seated, top entry bolted
bonnet, globe style body, cage guided balanced plug
SIZE, RATINGS & ENDCONNECTIONS:
2” - 8”, Class 150, 300, 600, 900, 1500 RF, RTJ, BWE; only in 2”
10” - 18” Class 150, 300, 600, RF, BWE, RTJ
BODY/BONNET MATERIALS:
Carbon Steel, ASTM A216 Gr WCC
Chrome Moly, ASTM A217 Gr WC9
Stainless Steel, ASTM A351 Gr CF8M
BONNET: Clamped Bonnet
High Temperature Extended Bonnet (Optional)
BODY/BONNET BOLTING:
ASTM A-193 GR B7 Studs, ASTM A-194 GR 2H Nuts
STEM PACKING:
PTFE V-Rings, -40 to 460˚F(-22 to 238˚C)
BTG, -40 to 500˚F(-22 to 260˚C)
Laminated Graphite,-320 to 800˚F (-195 to 426˚C)
PACKING STUDS, NUTS & FOLLOWER:
300 Series Stainless Steel
GASKETS:
Body/Bonnet and Seat Ring/Body:
Spiral Wound 316L/Graphite 500˚F (260˚C) Maximum
Flexible Graphite: 800˚F (426˚C) Maximum
TRIM SIZES:
Full Port, 80%, 60% and 40% Reduced
Custom, contact Application Engineering
PLUG (PISTON) SEAL MATERIALS:
Graphite-reinforced PTFE, max. temp. 500˚ (Class IV shutoff)
Ni-Resist, max. temp. 800˚F (Class III shutoff)
FLOW CHARACTERISTICS:
Linear, and Equal Percentage
SHUTOFF CLASS (ANSI /ISA 70-2):
Standard trim, 0-500˚F(-18 to 260˚C) Max. Class IV (.01% Cv).
High-temp trim, 0-800˚F(-18 to 426˚C), Class III (.1% Cv).
For optional Class IV or V shutoff, contact factory.
TRIM MATERIAL COMBINATIONS:
PLUG CAGE SEAT RING
Martensitic STD 410 Hardened 410 Hardened 410 Hardened
Martensitic HI-TEMP CA6NM CA6NM CA6NM
Nitrided Nitrided Nitrided
Austemtic STD 316 316 316
Austemtic HI-TEMP 316 Stellited 316 Stellited 316 Stellited
ACTUATORS:
Standard: Spring and Diaphragm
Optional: Piston, Double Acting/Spring Return
HIGH FLOW CAPACITIESD-Series flow capacies are greater than or equal
to compeng product. Opmized flow geometry
reduces body velocies and pressure losses, maxi-
mizing valve body life.
CAGE RETAINED SEAT DESIGNUnlike some compeng designs, which use compli-
cated seat retenon methods, the D-Series cage
and seat ring are clamped in place between the
bonnet and body. This design eliminates the main-
tenance problems associated with removal of bolted-in seat rings.
RUGGED PLUG SEALD-Series heavy cupwasher style PTFE plug seal has
three times the cross-sectional area and wear sur-
face of competing designs with minimal friction for
tightest resolution. Pressure energized to provide a
tight seal at low and high pressures, D-Series seal
provides tight shut-off for longer than competitive
designs.
RELIABLE ACTUATOR CONNECTIOND-Series actuators are clamped in place with a
simple and reliable yoke lock nut. Actuator
mounng guarantees ease of disassembly no
maer how corrosive the environment.
REDUCED SEAT WEAR/TIGHTER SHUT-OFFD-Series control valves are specifically designed for
high pressure drop service. Pressure drop, high ve-
locities and throttling occur only at the cage win-dow and the plug, thereby protecting the seat ring
and tight shut-off capability of the valve.
D-Series
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Feature Advantage Benefit
Rugged, Pressure-Balanced Design Allows for the Use of Smaller Actuators Lower Init ial Cost
Multi-stage, Anti-Noise, Anti-Cavitation Trims Eff icient Energy Dissipation Longer Life of Valve Assets
Optimized , High Capacity Flow Path Higher Cv per Size than Majority of Valves Lower Initial Costs
in its Class
Compact Multi-Spring Actuator Reduced Height and Weight Lower Installation Costs
Industry Standard Accessory Mounting Accommodates most valve automation Lower Automation Costsproducts
Interchangeable, Top-Entry, & Self-Aligning Flexibility of Applications, Ease of Access, Reduced Spare Inventory Cost
Trim and High Alignment Integrity
High-Performance, High Temp, Stem Packing Reduced Leakage, Lower Fugitive Emissions Improved Environmental Compliance
4 Precision Machined Trim Sets Available Highly Accurate and Repeatable Throttling Improved Product Yield & Quality
Control
Hardened Trim Materials with Wide Variety Longer Life and Greater Flexibility Reduced Operating and Maintenance Costs,
of Material Selection Longer Service Life
D-Series Features & Benefits
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Key Target Applicaons
The D-Series is well suited for a variety of general service applicaons as well as moderate noise and cavitaon
abatement services.
Feedwater Control regulates level of water in the boiler drum.
Auxiliary Steam Pressure Reducon Valve1) Sootblower: increases thermal efficiency by controlling steam supplied from superheated source.
2) Building Heat: Used for extracon steam control
3) Pegging Steam Control: Control of superheated steam to remove air from condensate at deaerator
Drain Valve prevents the presence of condensate in the turbine at startup or shutdown
Gland Seal Steam Valve is used to maintain constant gland stem pressure to seal air form the turbine.
Aemperator Spray, Superheat and Reheat Valve controls steam temperature to the turbine. In superheat applica-
ons this valve requires high control accuracy; in reheat spray applicaons cavitaon control and shutoff integrity
are required.
Other Applicaons: Condensate recirculaon, condensate blow down control, reheat atmospheric vent and fuel gas
control in power plant operaons. Steam management and major equipment protecon (pumps and compressors)
in Oil & Gas service, as well as a variety of applicaons in oil refining, gas processing, natural gas storage and LNG
and gas transmission.
TYPICAL FOSSIL FUEL POWER PLANT SYSTEM
D-Series
Thermal steam linesExtraction steam linesCondensate steam lines
1 - Feedwater Control Valve2 - Turbine and Header Drain Control Valve3 - Desuperheater Spray Control Valves
4 - Gland Seal Control Valves5 - Deaerator Level Control Valve6 - Heater Drain Control Valves
Key:
Note: Temperatures and pressures shown are llustrative only.
Superheater
Fuel
Air
Ash
3
1A 1
2
Boiler
Reheater
To condenser
Main steam line
Cold reheat line
Hot reheat line
2500 psia 1000ºF
700psia550ºF
650psia950ºF
Extraction steam lines
Boiler feedpump
Air Vent 50 psiasteam
Deaerator
1800 psia
800 psia
100 psia
5
5
Treatment
7
FromBFP
recirc.
H.P.Turbine
L.P.Turbine Generator
Condenser
Cooling water
CondensatePump
Feedwater Heaters
H.P. I.P. L.P.
9 9 9
To condenser
6
6
4
8
4
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D-Series Rugged Cage Design
Standard CageThe full ported, standard cage, provides maximum flow with minimum pressure drop. The
inherent linear or equal percent flow characterisc provides excellent low flow control, high
rangeability and maximum Cv per inch.
An-Cavitaon CageThe Les-Cav cage controls the effects of valve cavitaon providing a normal
valve/trim life expectancy in cavitang condions. Diametrically opposed
holes, increase the valves cavitaon index (Kc) and direct impinging flow to the
center of the cage, prevenng mechanical trim/body damage.
Reduced Trim CageThis oponal cage reduces the maximum Cv and flow to 80%, 60% or
40% of the normal full port valve. Used to provide body velocity control,
future flow expandability, or to correct for oversized valve condions.
Noise Reducing CageThe Les-Sonic cage is designed to reduce fluid generated noise up to
15 - 20dBA in steam, gas or any compressible fluid service. When used
in conjuncon with a Les-Sonic silencing orifice, noise aenuaon
of greater than 20dBA can be achieved.
D-Series Cv Table
Les-Sonic I
Valve DN Rating Full 60% Full 60% Single Les-Cav I
Size (in) EQ% EQ% Linear Linear Stage
2 50 150-1500 68 41 75 45 60 603 80 150-1500 140 84 155 93 124 124
4 100 150-1500 216 130 240 144 192 192
6 150 150-1500 400 240 450 270 340 340
150-600 756 454 800 480 672 672
900-1500 680 408 720 432 604 604
10 250 150-600 1395* 1116* 1300* 1040* 1240* 1240*
12 300 150-600 1818* 1454* 1800* 1440* 1616* 1616*
16 400 150-600 2600* 2080* 3100* 2800* 2480* 2480*
8 200
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*Currently in Testing
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Actuator Offerings
Spring & Diaphragm ActuatorThe D Series is available with a mul-spring diaphragm actuator which
delivers excellent control performance in a compact package. This actu-
ator design is based on decades-proven and highly reliable diaphragm
technology. The spring and diaphragm actuator provides for inherent faisafe operaon and can be easily reversed between direct and reverse
acng funcon. Standard posioners and a variety of accessories
cleanly mount on this actuator.
Standard D-Series Accessories
Posioners
Pneumac Siemens Model 760P
Electropneumac Siemens Model 760E
Siemens PS2
Oponal internal limit switches
Oponal valve posions transmission
Process Controllers
Electropneumac: PMC-2
Pneumac: PDAP/PRAP Pneumac: Mallard 3350/3360
Solenoid Valves
ASCO 8320G174
Noise Reducon Devices
Noise Suppressor
Les-Sonic Silencing Orifice
Air Regulators
ASG-1
AFG-2
Manual Override Handwheels
Piston ActuatorThe D Series is also available with a powerful piston
actuator. This actuator provides high thrust for its size by
taking advantage of higher air supply pressures. The piston
actuator offers precise control performance, long stroke
capability, and sffness that effecvely buffers high fluid
dynamic forces experienced in more extreme flow
condions. Standard posioners and a variety of
accessories cleanly mount on this actuator.
D-Series
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The D-Series is Available From:
A global manufacturer specializing in highly engineered, complex and severe environment products
that serve long-term, high-growth infrastructure markets, including upstream oil and gas, power
generaon and aerospace.
...and is Marketed Under the Following CIRCOR Brands:
Leslie Controls, Inc. has designed and manufactured valves for the power generaon, indus-
trial, marine and oil and gas markets for over a century. From high quality regulators with 99%
accuracy to severe service control valves that provide ZERO LEAKAGE, Leslie Controls products
are known throughout the world. Customers also rely on Leslie for engineered soluons for
their most difficult applicaons. Leslie’s Quick Delivery program provides a broad range of standard product within five days.
Regeltechnik Kornwestheim (RTK) has more than 35 years experience in the manufacture and
sales of control valves and is a leading European manufacturer of industrial valves. RTK deliv-
ers innovave products and services that improve thermal efficiency and system safety for all
heang and refrigeraon processes. RTK offers control valves, electric and pneumac actua-tors, sensors and controllers engineered for thermal control applicaons in general industry,
as well as auxiliary boiler and water treatment applicaons in power generaon.
Mallard Control is a premier supplier of measurement and control soluons to the oil and gas
industry. Our products (control valves, regulators, relief valves, controllers, switches, and
gauges) cover virtually every producon facility instrumentaon requirement, providing cus-tomers easy access to top-quality equipment from a single source at the most compeve
price.
www.lesliecontrols.com • [email protected] • 800.439.4485
www.rtk.de • [email protected] • +49 7154 1314 0
www.circorenergy.com • [email protected] • 800.654.4842
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